Dissertation / PhD Thesis/Book

PreJuSER-46209

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Sicherheitstechnische Auslegung der Betriebsumgebung eines Hochleistungs-Spallationstargetsystemes der Megawattklasse mit Quecksilber als Targetmaterial

Butzek, M. (Corresponding author)FZJ*

2005
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/428

Report No.: Juel-4175

Abstract: This thesis is concerning the safety relevant layout of the environment of a mercury based 5-Megawatt-spallation target. All safety relevant aspects related to construction, operation and dismantling as well economical issues were taken into account. Safety concerns are basically driven by the toxic and radioactive inventory as well as the kind and intensity of radiation produced by the spallation process. Due to significant differences in inventory and radiation between a spallation source and a fission reactor, for the design of the spallation source mentioned above the safety philosophy of a fission reactor must not be used unchanged. Rather than this a systematic study of all safety related boundary conditions is necessary. Within this thesis all safety relevant boundary conditions for this specific type of machine are given. Beside the spatial distribution of different areas inside the target station, influence of medias to be used as well as arising radiation and handling requirements are discussed in detail. A general layout of the target station is presented, serving as a basis for all further component and system development. An enclosure concept for the target station was developed, taking into account the safety relevant issues concerning the mercury used as target materials, the water cooling loops containing massive amounts of tritium as well as the materials used for the moderators potentially forming explosive mixtures. Concept and detailed technical layout of the enclosure system was chosen to guarantee safe operation of the source as well as taking care of requirement arising for handling needs. For design of the shielding different suitable materials have been discussed. A design for assembling the shielding is shown taking into account the safety relevant equirements during operation as well as during dismantling. The neutron beam shutters, buried inside the shielding were designed to optimize handling and positioning issued of the inner part of the neutron guide system. Due to the high amount of safety relevant handling procedures, concepts for time efficient and safe handling of the major components have been developed. Based on the concepts shown is this thesis, construction an operation of a high power spallation source of the described kind seem to be feasible considering safety and costs.

Note: Record converted from VDB: 12.11.2012
Note: Wuppertal, Univ., Diss., 2005

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Contributing Institute(s):

1. Zentralabteilung Technologie (ZAT)

Research Program(s):

1. Instrumentierung für fortschrittliche Neutronenquellen (M06)

Appears in the scientific report 2005

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Database coverage:

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